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Path: utzoo!mnetor!seismo!ut-sally!std-unix
From: akre@cuuxb.uucp (Mike Akre)
Newsgroups: comp.std.unix
Subject: Re: tar stop at mount points
Message-ID: <8128@ut-sally.UUCP>
Date: Thu, 21-May-87 09:22:52 EDT
Article-I.D.: ut-sally.8128
Posted: Thu May 21 09:22:52 1987
Date-Received: Sun, 24-May-87 21:39:25 EDT
References: <8046@ut-sally.UUCP> <8018@ut-sally.UUCP> <8024@ut-sally.UUCP> <8068@ut-sally.UUCP>
Sender: std-unix@ut-sally.UUCP
Reply-To: ut-sally!rutgers.edu!moss!cuuxb!akre (Mike Akre)
Organization: AT&T, Data Systems Division, Lisle, IL
Lines: 23
Approved: jsq@sally.utexas.edu (Moderator, John Quarterman)
Summary: find knows how to do this in SVR3

From: akre@cuuxb.uucp (Mike Akre)

In article <8068@ut-sally.UUCP> jsdy@hadron.uucp (Joseph S. D. Yao) writes:
>>Hmmm.  Since stat(2) returns
>>               dev_t  st_dev; /* device inode resides on */
>>it should be easy enough to see when you've crossed a device boundary,
>
>What I'd been thinking of was something on the order of:
>	find / \( -fs /usr -o -fsd /dev/rdsk/ra11 \) -a -print

find knows how to not cross mount points in System V Release 3.0 and later.
It has a new option "-mount" that will restrict find's searching to the
filesystem containing the directory specified.

I do full backups of the root filesystem with something like this:

	cd /
	find . -mount -depth -print | cpio -oacB >/dev/rmt/0m

Mike Akre
Lisle, IL

Volume-Number: Volume 11, Number 35